Accession number: 86.200.7505; Attribution to Jackson based on the photonegative's inclusion in the History Colorado William Henry Jackson Collection.; History Colorado.; Condition: tape, paper residue, masked, scratched.; Formerly Jackson 10257; Number: "10257" inked on negative.; Title inked on original negative and reproduced on copy negative.; Title on envelope for negative reads: "Heart of Selkirks."; R7201037418